Cita APA (7a ed.)

Gruening, E. (1927). These United States: A symposium. Boni and Liveright.

Cita Chicago Style (17a ed.)

Gruening, Ernest. These United States: A Symposium. New York: Boni and Liveright, 1927.

Cita MLA (8a ed.)

Gruening, Ernest. These United States: A Symposium. Boni and Liveright, 1927.